The NSK-RA15 Series Linear Guide Bearing Blocks are matched for the NSK-R1A15 Rail. This series offers improved performance, high rigidity, high accuracy, long operating life, smoother operation, and balanced load distribution. With a larger contact surface, these roller guides allow for super-high load capacities with dynamic loads up to 13kN (2,923 lbs) and static loads up to 37kN (8,318 lbs). The blocks are available in three types (Square, Low-Profile, or Flange) and two lengths (Standard or Long). For the same type and size, these block and rails are interchangeable to allow for application flexibility and ease of use.